JPH01100485A - Radar display method and apparatus - Google Patents

Radar display method and apparatus

Info

Publication number
JPH01100485A
JPH01100485A JP25876487A JP25876487A JPH01100485A JP H01100485 A JPH01100485 A JP H01100485A JP 25876487 A JP25876487 A JP 25876487A JP 25876487 A JP25876487 A JP 25876487A JP H01100485 A JPH01100485 A JP H01100485A
Authority
JP
Japan
Prior art keywords
display area
display
radar
conversion circuit
elevation angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP25876487A
Other languages
Japanese (ja)
Other versions
JP2587957B2 (en
Inventor
Masamichi Sekine
関根 雅迪
Chiaki Kawate
川手 千昭
Mitsuru Ochibe
落部 満
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Steel Works Ltd
Mitsubishi Electric Corp
Technical Research and Development Institute of Japan Defence Agency
Original Assignee
Japan Steel Works Ltd
Mitsubishi Electric Corp
Technical Research and Development Institute of Japan Defence Agency
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Steel Works Ltd, Mitsubishi Electric Corp, Technical Research and Development Institute of Japan Defence Agency filed Critical Japan Steel Works Ltd
Priority to JP62258764A priority Critical patent/JP2587957B2/en
Publication of JPH01100485A publication Critical patent/JPH01100485A/en
Application granted granted Critical
Publication of JP2587957B2 publication Critical patent/JP2587957B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To enable quick size discrimination of a target, by displaying targets of the same size at the same distance from a radar set position in a display area in the same size regardless of the direction of elevation. CONSTITUTION:The center (A) of a circular display area S is set at 90 deg. in elevation at a radar set position while the circumference of the circular display area S is set at 0 deg. to make a distance to the center (A) from the circumference of the circular display area S proportional to an elevation E. The upper side of the circular display area S is set as North in the bearing, the lower side thereof as South, the right side thereof as East and the left side thereof as West. Angle between a straight line a1, with the azimuth of 0 deg. and that connecting certain one point in the display area S and the center (A) indicates the bearing of this one point. The intensity of reflection of an electron beam radiated from a radar antenna is displayed as brightness within the display area S.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、レーダシステムにおいて、レーダアンテナ
より照射している電子ビームの仰角、方位角及び反射強
度の3つの関係を表現するレーダ表示方法及び装置に関
するものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a radar display method and method for expressing three relationships among the elevation angle, azimuth angle, and reflection intensity of an electron beam irradiated from a radar antenna in a radar system. It is related to the device.

〔従来の技術〕[Conventional technology]

第3図は、tsro年に発行された「RADAR)IA
NDBOOK J  (McGRAW−HILL BO
OK COMP、ANY)のChapter 6に記載
されているレーダ表示方法のタイプA、B、C,D、E
、F、G、H,I、J。
Figure 3 shows the “RADAR) IA” issued in 2015.
NDBOOK J (McGRAW-HILL BO
Radar display method types A, B, C, D, and E described in Chapter 6 of OK COMP, ANY)
, F, G, H, I, J.

K、L、M、N、P及びRのうち最も良く使われるレー
ダ表示方法を示す図であり、第3図(a)(b)fc)
(d )(e l  はそれぞれタイプA、B、C,E
 (RHI )。
It is a diagram showing the most commonly used radar display method among K, L, M, N, P and R, and Fig. 3 (a) (b) fc)
(d) (e l are types A, B, C, and E, respectively)
(RHI).

P(PPI)の表示例を示しである。図において。A display example of P (PPI) is shown below. In fig.

Rは距11i11.AZは方位角、Eは仰角、Hは高度
R is the distance 11i11. AZ is azimuth, E is elevation, and H is altitude.

■は電子ビームの反射強度である。上記のように。■ is the reflected intensity of the electron beam. As described above.

従来のレーダ表示方法は、距離R1方位角AZ。The conventional radar display method is distance R1 azimuth AZ.

仰角E、高1”7H及び電子ビームの反射強度Iの5つ
の情幸μのうちのいくつかを組合わせて表現したもので
ある。
It is expressed by combining some of the five emotions μ of elevation angle E, height 1”7H, and electron beam reflection intensity I.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

方位角AZが0度〜360度、仰角Eが0度〜90度の
半球空間を走査するレーダシステムにおいて、方位角A
Z、仰角E及び電子ビームの反射強度Iの3つの情報を
表現する場合、上記のような従来のレーダ表示方法の中
では、第3図tc+に示すタイプCが最も適している。
In a radar system that scans a hemispherical space with an azimuth angle AZ of 0 degrees to 360 degrees and an elevation angle E of 0 degrees to 90 degrees, the azimuth angle A
When expressing three pieces of information: Z, elevation angle E, and electron beam reflection intensity I, type C shown in FIG. 3 tc+ is most suitable among the conventional radar display methods as described above.

しかし、タイプCでは直交する横軸と縦軸をそれぞれ方
位角AZ及び仰角Eとしているため、方位角AZと仰角
Eの関係は、良く知られている地図のメルカトル図法の
経度と緯度の関係と同じである。地図のメルカトル図法
では、同一面積の陸地であっても赤道付近に位置する場
合と極点付近に位置する場合では、地図上においては面
積が異なり、極点付近の方では面積が広く表現されてい
ることは周知のことである。同様に、レーダ表示方法の
タイプCでは、レーダの設置位置から同一距離にある同
じ大きさの目標であっても、仰角Eが0度付近と仰角E
が90度付近では表示領域内において表現される目標の
大きさが異なる。このため9表示装置の観察者がすばや
く目標の大小判別を行うことは困難であった。
However, in Type C, the orthogonal horizontal and vertical axes are the azimuth angle AZ and the elevation angle E, respectively, so the relationship between the azimuth angle AZ and the elevation angle E is similar to the relationship between longitude and latitude in the well-known Mercator projection of maps. It's the same. In the Mercator projection of maps, even if the area of land is the same, if it is located near the equator or near the poles, the area will be different on the map, and the area near the poles will be expressed wider. is well known. Similarly, in radar display method type C, even if the target is the same size and located at the same distance from the radar installation position, the elevation angle E is around 0 degrees and the elevation angle E
When the angle is around 90 degrees, the size of the target expressed within the display area differs. For this reason, it is difficult for an observer using a 9-display device to quickly determine the size of a target.

この発明は、かかる問題点を解決するためになされたも
ので、レーダ設置位置から同一距離にある同じ大きさの
目標を、仰角Eの方向にかかわららず同じ大きさで表示
領域内に表示することによって1表示装置の観察者がす
ばやく目標の大小判  。
This invention was made to solve this problem, and displays targets of the same size and located at the same distance from the radar installation position within the display area with the same size regardless of the direction of the elevation angle E. By using one display device, the observer can quickly determine the size of the target.

別を行えるようなレーダ表示方法及び装置を提供  。We provide a radar display method and device that allows different types of information to be displayed.

するものである。It is something to do.

〔問題点を解決するための手段〕         j
この発明に係るレーダ表示方法は9円形の表示  i領
域の中心をレーダの設置位置における仰角90度とし9
円形の表示領域の円周部を仰角0度として、上記円形の
表示領域の円周部から中心へ向う距離と仰角とを比例さ
せ、また上記円形の表示領域の円周方向を方位角として
、方位角0度の直線と9表示領域内のある一点と上記円
形の表示領域  1の中心とを結ぶ直線とのなす角が、
その一点の方  j位を示す極座標系を構成したもので
ある。
[Means to solve the problem] j
The radar display method according to the present invention is a circular display with the center of area i set at an elevation angle of 90 degrees at the radar installation position.
The circumference of the circular display area is set as an elevation angle of 0 degrees, the distance from the circumference of the circular display area toward the center is proportional to the elevation angle, and the circumferential direction of the circular display area is set as the azimuth, The angle between a straight line with an azimuth angle of 0 degrees and a straight line connecting a certain point within the display area 9 and the center of the circular display area 1 is:
This is a polar coordinate system that indicates the direction j of that point.

この発明に係るレーダ表示装置はレーダアンテナより照
射している電子ビームの方位角及び仰角  1を入力し
、方位角を場値及び■値に変換する5IN1変換回路及
びCOS変換回路と、仰角を円形の表示領域の円周部か
ら中心への距離に変換する表示距離変換回路と、方位角
を変換した苅値及び■値  jと仰角を変換した表示距
離とをそれぞれ乗算する乗算回路とによって表示領域内
の表示位置を決定する信号を発生する位置信号発生部と
、電子ビームの反射強度信号によって表示領域内の輝度
を制卸する信号を発生する輝度信号発生部と、上記位置
信号発生部及び輝度信号発生部からの出力信号によって
表示を行う表示部とを具備したものである。
The radar display device according to the present invention includes a 5IN1 conversion circuit and a COS conversion circuit that input the azimuth angle and elevation angle 1 of the electron beam irradiated from the radar antenna and convert the azimuth angle into a field value and a value, and a COS conversion circuit that converts the elevation angle into a circular shape. A display distance conversion circuit that converts the distance from the circumference to the center of the display area, and a multiplication circuit that multiplies the azimuth-converted value and ■ value j by the elevation angle-converted display distance, respectively. a position signal generating section that generates a signal for determining a display position within the display area, a brightness signal generating section that generates a signal that controls the brightness within the display area based on a reflection intensity signal of the electron beam, and the position signal generating section and the brightness The display includes a display section that performs display based on the output signal from the signal generation section.

〔作 用〕 この発明においてはレーダアンテナにより照射している
電子ビームの反射強度を表示領域内の輝度として表示し
、電子ビームの仰角、方位角及び反射強度の3つの関係
を表現する。
[Function] In this invention, the reflected intensity of the electron beam irradiated by the radar antenna is displayed as the brightness within the display area, and the three relationships among the elevation angle, azimuth angle, and reflected intensity of the electron beam are expressed.

〔実施例〕〔Example〕

第1図はこの発明によるレーダ表示方法を示す図であり
9図において、AZ、E及び■は第3図に示したものと
同様である。Sは円形の表示領域。
FIG. 1 is a diagram showing the radar display method according to the present invention, and in FIG. 9, AZ, E, and ■ are the same as those shown in FIG. 3. S is a circular display area.

イは表示領域Sの中心1a+〜ah4 は中心イから表
示領域Sの円周部に向けて放射状に描いた仮組直線であ
る。
The centers 1a+ to ah4 of the display area S are temporary straight lines drawn radially from the center A toward the circumference of the display area S.

この発明のレーダ表示方法は円形の表示領域Sの中心イ
をレーダの設置位置における仰角90度すなわち天頂と
し2円形の表示領域Sの円周部を仰角0度として1円形
の表示領域Sの円周部から中心イヘ向かう距離と仰角E
とが比例させ、また円形の表示領域Sの上側を方位角0
度すなわち方位の北とし、下側を方位角180度すなわ
ち方位の南とし、右側を方位角90度すなわち方位の東
とし、左側を方位角270度すなわち方位の西として、
方位角0度の直線a1と9表示領域S内のある一点と上
記円形の表示領域の中心イとを結ぶ直線とのなす角が、
その一点の方位を示す極座標系を構成し、レーダアンテ
ナより照射している電子ビームの反射強度を表示領域内
の輝度として表示し、電子ビームの仰角、方位角及び反
射強度の3つの関係を表現するようにしたものである。
In the radar display method of the present invention, the center A of the circular display area S is set at an elevation angle of 90 degrees at the radar installation position, that is, the zenith, and the circumference of the circular display area S is set at an elevation angle of 0 degrees. Distance and elevation angle E from the periphery to the center
and the upper side of the circular display area S at an azimuth angle of 0
degree or north of the bearing, the lower side is 180 degrees of azimuth or south of the bearing, the right side is 90 degrees of azimuth or east of the bearing, and the left side is 270 degrees of azimuth or west of the bearing.
The angle formed by the straight line a1 with an azimuth angle of 0 degrees and the straight line connecting a certain point in the 9 display area S and the center A of the circular display area is,
Constructs a polar coordinate system that indicates the direction of one point, displays the reflected intensity of the electron beam irradiated by the radar antenna as brightness within the display area, and expresses the three relationships among the elevation angle, azimuth angle, and reflected intensity of the electron beam. It was designed to do so.

第2図は、この発明のレーダ表示方法を実現するための
レーダ表示装置の一実施例を示す構成図である。図にお
いて、111はレーダアンテナより照射している電子ビ
ームの方位角AZをi値に変換するSIN変換回路、(
21は上記方位角AZを(3)値に変換するCOS変換
回路、(3)は上記電子ビームの仰角Eを円形の表示領
域Sの円周部から中心イへの距離に変換する表示距離変
換回路、(4)は方位角AZを変換した苅値及びU値と
仰角Eを変換した表示距離とをそれぞれ乗算する乗算回
路、(5)は上記SUN変換回路111.COS変換回
路(2)9表示距離変換回路(3)及び乗算回路(4)
によって構成されて表示領域内の表示位置を決める位置
信号X及びYを発生する位置信号発生部、(6)は上記
電子ビームの反射強度Iによって9表示領域内の輝度を
制御する輝度信号2を発生する輝度信号発生部、(7)
は位置信号発生部(5)及び輝度信号発生部(6)によ
って発生された位置信号X及びYと輝度信号Zによって
表示を行う表示部、AZ、E及び工は第3図と同じであ
る。
FIG. 2 is a configuration diagram showing an embodiment of a radar display device for realizing the radar display method of the present invention. In the figure, 111 is a SIN conversion circuit that converts the azimuth angle AZ of the electron beam irradiated from the radar antenna into an i value;
21 is a COS conversion circuit that converts the azimuth angle AZ into a (3) value, and (3) is a display distance conversion circuit that converts the elevation angle E of the electron beam into the distance from the circumference of the circular display area S to the center A. circuit, (4) is a multiplication circuit that multiplies the azimuth value and U value obtained by converting the azimuth angle AZ, and the display distance obtained by converting the elevation angle E, and (5) is the above-mentioned SUN conversion circuit 111. COS conversion circuit (2) 9 display distance conversion circuit (3) and multiplication circuit (4)
(6) generates position signals X and Y for determining the display position within the display area; Luminance signal generating section, (7)
The display section, AZ, E, and A, which perform display using the position signals X and Y and the luminance signal Z generated by the position signal generating section (5) and the luminance signal generating section (6), are the same as those in FIG.

上記、第2図のように構成されたレーダ表示装置の動作
を説明する。位置信号発生部(5)では、電子ビームの
方位角AZ及び仰角Eによって次式により位置信号X及
びYを発生する。
The operation of the radar display device configured as shown in FIG. 2 will be described. The position signal generating section (5) generates position signals X and Y according to the following equations based on the azimuth angle AZ and the elevation angle E of the electron beam.

ここで、に1は仰角と表示領域内の距離との関係を表わ
す民間の定数である。
Here, 1 is a private constant representing the relationship between the elevation angle and the distance within the display area.

輝度信号発生部(6:では、目的によって電子ビームの
方位角AZ及び仰角Eで決まる方向の距離0からレーダ
の最大探知距離までの電子ビームの反射強度■のうち最
大反射強度のレーダビデオを表示するように輝度信号2
を、又は、距離0からレーダの最大探知距離までの電子
ビームの反射強度■を積分して輝度信号Zを発生する。
The brightness signal generator (6: displays the radar video of the maximum reflected intensity of the electron beam from distance 0 to the radar's maximum detection distance in the direction determined by the azimuth angle AZ and elevation angle E of the electron beam depending on the purpose. Brightness signal 2
Alternatively, a brightness signal Z is generated by integrating the reflection intensity (2) of the electron beam from distance 0 to the maximum detection distance of the radar.

輝度信号Zは次式のように表わされる。The luminance signal Z is expressed as follows.

Z = I、              ・・・・・
・13+このようにして発生された位置信号X及びY。
Z = I, ...
-13+position signals X and Y thus generated.

輝度信号Zによって表示部(7)に、この発明によるレ
ーダ表示方法による表示を行うものである。
The luminance signal Z is used to display the radar display method according to the present invention on the display section (7).

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明を実施することによって、レー
ダの設置位置から同一距離にある同じ大きさの目標であ
れば、半球空間の全ての仰角及び方位角の方向に対して
1表示領域内に同じ大きさで表現することができ9表示
装置の観察者はすばや(目標の大小判別を行うことがで
きる。また。
As described above, by implementing the present invention, targets of the same size and at the same distance from the radar installation position can be displayed within one display area for all elevation and azimuth directions in hemispheric space. It can be expressed in the same size, and the viewer of the 9 display device can quickly distinguish between the size of the target and the small one.

同じ大きさの目標であってもレーダの設置位置からの距
離が遠(なるほど小さく表示されるので目標の距離判別
も従来のタイプCよりも容易に行うことができる。
Even if the target is the same size, the distance from the radar installation position is far (the smaller it is displayed), so the distance to the target can be determined more easily than with the conventional type C.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、この発明によるレーダ表示方法を示す図、第
2図はこの発明によるレーダ表示装置の一実施例を示す
構成図、第3図は、従来のレーダ表示方法を示す図であ
る。 図中、(11はSIN変換回路、(2)はCOS変換回
路、(3)は表示距離変換回路、(4)は乗算回路、(
5)は位置信号発生部、(61は輝度信号発生部、(7
)は表示部、Rは距離、AZは方位角、Eは仰角、Hは
高度、■は電子ビームの反射強度である。 なお9図中、同一あるいは相当部分には同一符号を付し
て示しである。
FIG. 1 is a diagram showing a radar display method according to the present invention, FIG. 2 is a block diagram showing an embodiment of a radar display device according to the present invention, and FIG. 3 is a diagram showing a conventional radar display method. In the figure, (11 is a SIN conversion circuit, (2) is a COS conversion circuit, (3) is a display distance conversion circuit, (4) is a multiplication circuit, (
5) is a position signal generation section, (61 is a luminance signal generation section, (7)
) is the display part, R is the distance, AZ is the azimuth angle, E is the elevation angle, H is the altitude, and ■ is the reflected intensity of the electron beam. In FIG. 9, the same or corresponding parts are designated by the same reference numerals.

Claims (2)

【特許請求の範囲】[Claims] (1)レーダシステムにおけるレーダビデオの表示方法
において、円形の表示領域の中心をレーダの設置位置に
おける仰角90度とし、円形の表示領域の円周部を仰角
0度として、上記円形の表示領域の円周部からの中心へ
向う距離と仰角とを比例させ、また上記円形の表示領域
の円周方向を方位角として、方位角度0度の直線と、表
示領域内のある一点と上記円形の表示領域の中心とを結
ぶ直線とのなす角が、その一点の方位を示す極座標系を
構成し、レーダアンテナより照射している電子ビームの
反射強度を表示領域内の輝度として表示し、電子ビーム
の仰角、方位角及び反射強度の3つの関係を表現するレ
ーダ表示方法。
(1) In a radar video display method in a radar system, the center of the circular display area is set at an elevation angle of 90 degrees at the radar installation position, and the circumference of the circular display area is set at an elevation angle of 0 degrees. The distance from the circumference toward the center is proportional to the elevation angle, and the circumferential direction of the circular display area is set as the azimuth angle, and a straight line with an azimuth angle of 0 degrees, a point in the display area, and the circular display The angle formed by the straight line connecting the center of the area constitutes a polar coordinate system that indicates the direction of that point.The reflected intensity of the electron beam emitted from the radar antenna is displayed as the brightness within the display area, and the electron beam A radar display method that expresses three relationships: elevation angle, azimuth angle, and reflection intensity.
(2)レーダシステムにおけるレーダビデオの表示装置
において、レーダアンテナより照射している電子ビーム
の方位角及び仰角を入力し、方位角をsin値及びco
s値に変換するSIN変換回路及びCOS変換回路、仰
角を円形の表示領域の円周部から中心への距離に変換す
る表示距離変換回路、上記SIN変換回路の出力値と表
示距離変換回路の出力値、および上記COS変換回路の
出力値と表示距離変換回路の出力値をそれぞれ乗算する
乗算回路とを有し、表示領域内の表示位置を決定する信
号を発生する位置信号発生部と、電子ビームの反射強度
信号によつて表示領域内の輝度を制御する信号を発生す
る輝度信号発生部と、上記位置信号発生部及び輝度信号
発生部からの出力信号によつて表示を行う表示部とを具
備したことを特徴とするレーダ表示装置。
(2) In the radar video display device of the radar system, input the azimuth and elevation angle of the electron beam irradiated from the radar antenna, and calculate the azimuth angle by the sine value and co
A SIN conversion circuit and a COS conversion circuit that convert into s values, a display distance conversion circuit that converts the elevation angle into the distance from the circumference to the center of the circular display area, and the output value of the SIN conversion circuit and the output of the display distance conversion circuit. a position signal generating section that has a multiplier circuit that multiplies the output value of the COS conversion circuit and the output value of the display distance conversion circuit, respectively, and generates a signal that determines the display position within the display area; a luminance signal generating section that generates a signal for controlling the luminance in the display area based on the reflected intensity signal of the position signal generating section and a display section that displays a display based on the output signals from the position signal generating section and the luminance signal generating section. A radar display device characterized by:
JP62258764A 1987-10-14 1987-10-14 Radar display method and apparatus Expired - Lifetime JP2587957B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05196716A (en) * 1991-08-02 1993-08-06 Koden Electron Co Ltd Direction finder
JP2008275375A (en) * 2007-04-26 2008-11-13 Toshiba Corp Radar information display device
JP2012068170A (en) * 2010-09-24 2012-04-05 Toshiba Denpa Products Kk Radar display device and radar display method
JP2013124911A (en) * 2011-12-14 2013-06-24 Toshiba Corp Target display device and target display program

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794774A (en) * 1980-12-04 1982-06-12 Seikosha Kk Constellation display
JPS5865468A (en) * 1981-10-15 1983-04-19 吉仲 英樹 Celestial sphere indicating apparatus
JPS62203482U (en) * 1986-06-17 1987-12-25

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794774A (en) * 1980-12-04 1982-06-12 Seikosha Kk Constellation display
JPS5865468A (en) * 1981-10-15 1983-04-19 吉仲 英樹 Celestial sphere indicating apparatus
JPS62203482U (en) * 1986-06-17 1987-12-25

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05196716A (en) * 1991-08-02 1993-08-06 Koden Electron Co Ltd Direction finder
JP2008275375A (en) * 2007-04-26 2008-11-13 Toshiba Corp Radar information display device
JP2012068170A (en) * 2010-09-24 2012-04-05 Toshiba Denpa Products Kk Radar display device and radar display method
JP2013124911A (en) * 2011-12-14 2013-06-24 Toshiba Corp Target display device and target display program

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